165 



Res. Serv. [Rep.] ARS-S-71, pp. 34-40. 

 These five trapping experiments illustrate that even with somewhat inefficient 

 procedures, nale-baited traps effectively removed a portion of overwintered 

 boll weevils from a developing population and thereby provided a degree of 

 suppression sufficient to justify inclusion of the trapping principle as one 

 of the suppression measures in the PBWEE. Subsequent to these experiments 

 several improvements made the trapping principle even more efficient. 



317. . 1977. Managing and monitoring boll weevils and tobacco budworms 

 with grandlure and virelure. Proc. 1977 Beltwide Cotton Prod.-Mech. 

 Res. Conf., pp. 78-79. . 



One of the most promising new tools available to cotton farmers for reducing 

 the heavy load of insecticide costs for several important pests on cotton is 

 pheromones , chei^icals produced by one sex of an insect to attract the same 

 and/or opposite sex to the same area for purposes of mating. This manuscript 

 discusses the commercial application and availability of grandlure and vire- 

 lure , pheromones for the boll weevil, Anthonomus grandis Boheman, and the 

 tobacco budworm moth, Heliothis virescens (F.), respectively. 



318. , and Bovd, F. J. 1976. Trapping during the Pilot Boll Weevil 

 Eradication Experiment, 1971-73. In Boll Weevil Suppression, Management 

 and Elimination Technology. Proceedings of a Conference, February 13-15, 

 1974, Memphis, Tennessee. U.S. Agric. Res. Serv. [Rep.] ARS-S-71, 



pp. 82-89. 

 One week after 1/3-grown square, with random sampling we had 8 chances in 

 100 of detecting, in any field, 1 egg-punctured square in a sample of 400, 

 given the above assumptions. In any field of less than 10 acres the cbinces 

 would be improved but where populations are less chan two weevils per 10 

 acres, as the season progresses (and number of squares per acre increases). 



